Gearing for motor-driven tools.



PATENTED JUNE 23, 1903.

A. PORTERFIBLD. GEARING FOR MOTOR DRIVEN TOOLS.

APPLICATION FILED DEC. 9, 1902.

no MODEL.

m 0 T N m N ALEXANDER PORTER/WELD VV/T/VESS ES HIS ATTORNEYS PatentedJune 23, 1903.

PATENT OFFICE- ALEXANDER PORTERFIELD, OF DUMBARTON, SCOTLAND.

'GEARING FOR MOTCR-DRIVEN TOOLS.

SPECIFICATION forming part of Letters Patent No. 731,948, dated June 23,1903.

Application filed December 9, 1902.

To all whom it may concern.-

Be it known that I, ALEXANDER PORTER- FIELD, a subject of the King ofGreat Britain and Ireland, and a resident of Dumbarton, in the county ofDumbarton, Scotland, (whose postal address is Cree Bank, Dumbarton, inthe county of Dumbarton, Scotland,) have invented a certain ImprovedGearing for Motor- Driven Tools, (for which I have applied for a Britishpatent, No. 13,581, dated June 16, 1902,) of which the following is aspecification.

The said invention has for its object to provide an improved and simplefitting which can be applied to any known form of pneumatic drilling orboring tool, so that such tool when notrequired for drilling can beutilized as a motor to drive cutting or like machines, such as are usedfor cutting out openings for ships side lights or the like, whichmachines have hitherto generally been worked by hand.

The invention is illustrated by the accompanying drawings, in which thesame reference-letters are used to mark the same or like parts.

Figure 1 of the drawings is an end eleva tion, and Fig. 2 a sideelevation, partly in section, of a cutting apparatus in which theimproved fitting is employed. Figs. 3, 4, and 5 are respectively a backelevation, a side elevation, and a front elevation, of the improvedfitting, drawn to a larger scale than Figs. 1 and 2.

The improved fitting according to the invention consists, essentially,of a pinion A, which is arranged on the spindle B of a pneumaticdrilling or boring tool B, so as to enable such tool to drive anordinary cuttingmachine C,which is set in position, as shown, forcutting out a circular opening in a plate or ships side D. The pinion Ais formed on or fixed to a pinion-piece A, having a plug end A oftapered form to fit the usual drill- Serial No. 134,498. (No model.)

socket B in the spindle B of the pneumatic boring-tool B, thepinion-piece being also formed with a socket A to fit a stud E, which isscrewed to a fixed bar G of the cuttingmachine 0. When the parts are inposition, as shown, the back centering part B of the tool B bearsagainst the arm II of an ordinary boring-bracket I-I, fixed to the shipsside D, while the pinion-piece A, which has its taper end A insertedinto the socket B of the tool-spindle B, is mounted on the fixed stud E,the front end of the pinion-piece butting np against a fixed collar E onthe stud. The pinion portion A of the pinion-piece A then gears with apinion J, fixed to a shaft J, mounted on the lower end of the fixed barG, another pinion J 2 on the shaft gearing with a spur-wheel J carryingthe cutting-tool K. The pneumatic boring-tool B is thus simply andconveniently connected to the cuttingmachine 0, so that when it isstarted it will drive the machine, as required.

What I claim is-- 1. In combination, a motor-driven spindle having asocket in its end, a bar, a gear-wheel mounted thereon, a pinion to meshwithsaid wheel having a plug to fit said socket at one end, its otherend being adjacent to the bar, substantially as described.

2. In combination, a motor-driven spindle having a socket in its end, abar, a gear-wheel mounted thereon, a stud on thebar, a pinion having aplug at one end to fit the aforesaid socket, with a socket at'the otherend to fit said stud, the pinion being adapted to mesh with the gear,substantially as described.

In testimony. whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALEXANDER PORTERFIELD.

Witnesses:

DAVID FERGUSON, GEORGE PATTERSON.

